<template>
<!-- 头部区域 -->
    <el-container class="home_container">
  <el-header>
    <div>
      <img src="../assets/JN.png" width="44px" height="48px" border-radius='50%' alt="">
      <span>电商后台管理系统</span>
    </div>
    <el-button type="info" @click="logout">退出</el-button></el-header>
  <el-container>
    <!-- 侧边栏 -->
    <el-aside :width="isCollapse?'64px':'200px'">
        <div class="toggle-button" @click="toggleCollapse">|||</div>
      <!-- 侧边栏菜单区 -->
       <el-menu :default-active="activePath" :router="true" :collapse-transition="false" :collapse="isCollapse" 
       unique-opened background-color=#333744 text-color="#fff" >
        <!-- 一级菜单 -->
      <el-submenu v-for="item in menuList" :key="item.id" :index="item.id">
        <!-- 一级菜单的模板区 -->
        <template slot="title">
          <!-- 图标 -->
          <i :class="iconsObj[item.id]"></i><!-- 循环图标 -->
          <!-- 文本 -->
          <span>{{item.authName}}</span>
        </template>
          <!-- 二级菜单 -->
          <el-menu-item @click="saveNavState('/'+subItem.path)" :index="'/'+subItem.path" v-for="subItem in item.children" :key="subItem.id">
          <template slot="title">
          <!-- 图标 -->
          <i class="el-icon-menu"></i>
          <!-- 文本 -->
          <span>{{subItem.authName}}</span>
        </template></el-menu-item>
      </el-submenu>

    </el-menu>
    </el-aside>
     <!-- 右侧内容主体 -->
    <el-main>
      <router-view></router-view>
    </el-main>
  </el-container>
</el-container>
</template>

<script>
export default {
  created() {
    this.getMenuList();
    this.activePath=window.sessionStorage.getItem('activePath')
  },

  //清空token
  //window.sessionStorage.clear()
  //跳转到登录页
  //this.$router.push('/login')
  data() {
    return {
      menuList:[],
      iconsObj:{
        '125':'el-icon-user-solid',
        '103':'el-icon-s-tools',
        '101':'el-icon-s-goods',
        '102':'el-icon-s-order',
        '145':'el-icon-s-data',
      },
      isCollapse:false,//是否折叠
      //被激活的链接地址
      activePath:'',
    }
  },
  methods: {
    logout() {
      window.sessionStorage.clear();
      this.$router.push("/login");
      this.$message.success("退出登录成功");
    },
    //获取所有菜单
    async getMenuList(){
      const {data:res} = await this.$http.get('menus');
      if(res.meta.status!==200)return this.$message.error(res.meta.msg)
      this.menuList=res.data
      //console.log(res)
    },
    //点击按钮，菜单的折叠和展开
    toggleCollapse(){
      this.isCollapse=!this.isCollapse
    },
    //保存连接的激活状态
    saveNavState(activePath){
      window.sessionStorage.setItem('activePath',activePath);
      this.activePath=activePath;
    },
  },
};
</script>

<style lang="less" scoped>
.home_container{
    height: 100%;
}
.el-header{
    background-color: #B3C0D1;
    color: #333;
    display: flex;
    justify-content: space-between;
    padding-left: 0;
    align-items: center;
    color: #fff;
    font-size: 20px;
    > div {
      display: flex;
      align-items: center;
      span{
        margin-left: 15px;
      }
    }
}
 .el-aside {
    background-color: #333744;
    color: #333;
    text-align: center;
    line-height: 200px;
    .el-menu{
      border-right: 0;
    }
  }
.el-main{
    background-color: #eaedea;
}
.toggle-button{
  background-color: #4A5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  letter-spacing: 0.2em;
  cursor: pointer;//放在上面时鼠标指针变成小手
}
</style>